APA (7th ed.) Citation

Harris, A., Harrison, C., & Smithson, P. (1972). The land and conservation. Grosset and Dunlap.

Chicago Style (17th ed.) Citation

Harris, Anne, Carolyn Harrison, and Peter Smithson. The Land and Conservation. New York: Grosset and Dunlap, 1972.

MLA (9th ed.) Citation

Harris, Anne, et al. The Land and Conservation. Grosset and Dunlap, 1972.